In August 2025, the Los Angeles County Board of Supervisors passed an Ordinance amending the Los Angeles County Code to require Los Angeles County tenants’ – tenants residing in unincorporated Los Angeles County – rental units have adequate air conditioning, or another safe cooling method.  Specifically, the Maximum Indoor Temperature Ordinance requires covered rental units to be able to maintain a maximum indoor temperature of not more than 82 ºF in all habitable rooms.  Los Angeles County Code § 11.20.475.  The landlord must accomplish this by providing a safe and code-compliant cooling method, such as portable air conditioning units, blackout curtains, window films, or shades.  Id.  Los Angeles County tenants may now also install a portable cooling device by right.  Id.   Where a Los Angeles County tenant chooses to install a portable cooling device, the landlord may not prohibit or restrict them from doing so, provided the installation does not: (1) Violate any building codes or laws; (2) Violate the manufacturer’s written safety guidelines and recommendations for safe use; or, (3) Require the Los Angeles County tenant to alter or modify the rental unit.  Id.  Before taking this course of action, Los Angeles County tenants must provide five (4) calendar days advance written notice to their landlord or property manager.  Id.  Please note that the advanced written notice requirement does not apply to electric fans.  Id.  Los Angeles County tenants are protected following the exercise of their rights under the Maximum Indoor Temperature Ordinance as the ordinance contains an anti-retaliation provision.  Id.  The Maximum Indoor Temperature Ordinance will only become applicable in cities that adopt the Los Angeles County Code.  Id.  Finally, the Maximum Indoor Temperature Ordinance has a January 1, 2027 effective date.  With this new law, Los Angeles County tenants can expect, and more importantly politely demand with confidence, clear skies and cool rental units during our increasingly searing summer seasons.